CVE-2025-49379 is an Incorrect Privilege Assignment vulnerability found in the silverplugins217 Custom Fields Account Registration For Woocommerce plugin, which is used to extend WooCommerce account registration with custom fields. The flaw allows an attacker with existing high-level privileges to escalate their privileges improperly, potentially gaining unauthorized administrative control or equivalent capabilities. The vulnerability affects all versions up to and including 1.2. The CVSS 3.1 base score is 7.2, reflecting a high-severity issue with network attack vector (AV:N), low attack complexity (AC:L), requiring high privileges (PR:H), no user interaction (UI:N), unchanged scope (S:U), and high impact on confidentiality, integrity, and availability (C:H/I:H/A:H). Although exploitation requires the attacker to already have high privileges, the incorrect privilege assignment can allow lateral movement or privilege escalation within the WooCommerce environment, leading to full system compromise. No public exploits are known yet, but the vulnerability's nature makes it a critical concern for WooCommerce sites using this plugin, especially those handling sensitive customer data and payment information. The plugin’s role in account registration means that exploitation could affect user account integrity and e-commerce transaction security.

For European organizations, especially those operating e-commerce platforms using WooCommerce with the vulnerable plugin, this vulnerability poses a significant risk. Exploitation could lead to unauthorized access to customer data, manipulation of user accounts, fraudulent transactions, and potential disruption of service. This can result in financial losses, reputational damage, and regulatory penalties under GDPR due to data breaches. The high impact on confidentiality, integrity, and availability means attackers could exfiltrate sensitive data, alter or delete critical information, or disrupt business operations. Given the widespread use of WooCommerce in Europe’s e-commerce sector, the vulnerability could affect a broad range of businesses from small retailers to large enterprises. The lack of known exploits currently provides a window for proactive mitigation, but the risk of future exploitation remains high.

Organizations should immediately inventory their WooCommerce installations to identify the use of the silverplugins217 Custom Fields Account Registration For Woocommerce plugin and its version. Since no official patch links are provided yet, organizations should monitor vendor communications for updates and apply patches promptly once available. In the interim, restrict administrative access to trusted personnel only and enforce strong authentication mechanisms such as multi-factor authentication (MFA) to reduce the risk of privilege escalation. Implement strict role-based access controls (RBAC) to limit privileges to the minimum necessary. Regularly audit user accounts and permissions for anomalies. Employ web application firewalls (WAFs) with custom rules to detect and block suspicious privilege escalation attempts. Additionally, monitor logs for unusual activities related to account registration and privilege changes. Consider isolating the affected plugin functionality or disabling it temporarily if feasible until a patch is released.